U-boats of WWI

Most Successful U-boats

Below are the 30 most successful U-boats of World War One.

BoatShips sunkTons sunkShips hit during
U 35226 ships538,498 tons1915 - 1918
U 39154 ships406,325 tons1915 - 1918
U 38139 ships293,125 tons1915 - 1918
U 34119 ships257,652 tons1915 - 1918
U 5388 ships225,364 tons1916 - 1918
U 6373 ships203,418 tons1916 - 1918
U 3384 ships194,131 tons1915 - 1918
U 6446 ships147,869 tons1916 - 1918
U 2037 ships145,830 tons1915 - 1916
UC 1796 ships144,423 tons1916 - 1918
U 4652 ships140,314 tons1916 - 1918
U 7054 ships139,064 tons1916 - 1918
UB 4099 ships134,067 tons1916 - 1918
UC 2198 ships134,063 tons1916 - 1917
U 5564 ships133,742 tons1916 - 1918
U 6248 ships132,811 tons1917 - 1918
UB 18128 ships131,565 tons1916 - 1917
UB 5747 ships129,173 tons1917 - 1918
UC 65106 ships127,218 tons1917 - 1917
U 2435 ships121,122 tons1915 - 1917
U 15543 ships120,434 tons1917 - 1918
U 3238 ships120,034 tons1915 - 1918
U 8633 ships117,583 tons1917 - 1918
U 7321 ships115,599 tons1916 - 1918
UB 5040 ships114,421 tons1917 - 1918
U 4345 ships114,323 tons1916 - 1918
U 2140 ships113,580 tons1914 - 1917
UC 7163 ships110,750 tons1917 - 1918
U 8236 ships110,160 tons1916 - 1918
UB 4836 ships110,095 tons1917 - 1918
2,188 ships5,026,753 tons

Most of these boats were of course commanded by the most successful U-boat commanders of WWI.

WWI U-boat commanders section